Elevator mechanism.



No. '740,e5 s.

atentedrctobe 1933.

PATENT OFFICE. Y

GAETANO vVISCO, OF BRINTON, PENNSYLVANIA.

ELEVATOR MECHANISM.

SEECIFICATON forming part of Letters Patent No. 740,956, dated ()ctober 6, 1903. Application filed July 3, 193. Serial No. 164.194. (No model.)

To all whom t may concern.-

Be it known that I, GAETANO Visco, a suhject of the King of Italy, residing at Brinton, in the county of Allegheny and State of Penu- 5 sylvania, have invented a new and usefulImprovement in Elevator Mechanism, of which improvement the following is a specification.

This invention relates to certain new and useful improvements in elevator mechanism, the object of the invention being to provide an elevator wherein the cost of the operating apparatus will be greatly reduced.

A further object of this invention is to provide an elevator whereby much space may be saved and at the same time to provide an elevater wherein the opportunity for accidents will be reduced to a minimum.

A still further object of this invention is to provide an operating mechanism whereby'7 the elevator will carry all the operating parts, thusmaking the same much more compact and efficient.

With the above and other objects in view the invention consists in the novel construction, combination, and arrangement of parts to be hereinafter more fully described, and' specically pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this speciiicatiomand Wherein like numerals of reference indicate like parts throughout the several views,in which- Figure 1 is a rear elevation of my improved mechanism applied to a car, the car being partly broken away. Fig. 2 isa similar view in side elevation. Fig. 3 is a plan view of my improved mechanism. Fig..4 is a dia-v gram showing the Wiring for my improved mechanism.

The reference-numeral 1 indicates the elevater-car, on the top of which the mechanism is mounted. This mechanism comprises the electric motor 2, which is suitably supported on the frame 3, in which the dilerent operating parts are desirably mounted. Two shafts 4 and 5 are mounted in uprights 6, formed on the frame 3, and on the ends of these shafts the gears 7 7 and 3 8 are secured, the gears ou the corresponding ends of each shaft meshing with each other at their inner sides, the outer sides of the said gears meshing with vertical racks 9 9 and 10A 10, which are suitably secured to the interior of the elevator-well, and when the gears 7 and 8, meshingwith the said rack, are revolved the elevator-car 1 will be evenly raised or lowered, the said movement being dependent upon the direction of rotation of the said gears 7 and 3.

The racks 94 and 10 are ,preferably formed with sides which project over the edge of their engaging gears, whereby the car will be nicely guided when it is vertically moved, although the same mightl have independent guides if, desired.

Secured on the shafts 4 and 5 intermediate of the length thereof between the bearings 6 are the beveled gears 11 and 12, with' which mesh the beveled piuions 14 and 15, which are mounted on the ends of the shaft 16,which is rotatably mounted in the bearings 17 17, carried by the plate 3, and secured to the said shaft 16 between the said bearings 17 17 is the gear 13.

The motor2 has secured toits driving-shaft the pinion 19, which meshes with the gear 20, which is mounted in extensions of the bearings 17 17, the said gear 20 meshing with the gear 18, secured to the shaft 16. It will thus be seen that the motor 2 forms the driving means for the gears 7 and 8 through the gearing just described.

The band-wheels 2l and 22 are suitably mounted on the shafts 4 and 5, the said Wheels being covered with leather or the like for the purpose of presenting a frictional surface to the brake-shoe 23, which is carried by the lever 24, which is pivotallymounted in the extensions 25 25, formed on the bearings 17 17, and solenoids'26 and 27, located above and below said lever 24, control the position of the same, the upper solenoid 27 holding the shoe 23 away from the band-wheels 21 22 when the motor is running and the solenoid 26 causing the application of the shoe tothe Wheels when the current is cut o from the said motor. This brake being electrically operated, I provide an auxiliary or safety brake which consists of the shoes 28 and 29, located between and having its surface cut at the same contour as the gears 7 and 8, and these shoes are connected to the lever 30', the said lever normally holding the shoes 28 and 29 away from the gears by the action of the spring 31, which is connected to said lever.

A lever 32 is connected to the lever 30 by the link 33, the said lever 32 being fulcrumed n ear'its center, and the outer end thereof has connected to it the lever 34, with which the foot-operating lever 35 is pivotally con nected. By the depression of the lever 35 the shoes will be forced between the gears 7 and 8, thereby securely locking the same and preventing the descent of the car.

A controller 36 is suitably located within the car and has the usual operating-lever 37, which in its central position closes the circuit of any source of power 38 through the Wire 39, lever 37, contact 40, solenoid 26, and Wire 4l, thereby forcing the shoe 23 between the wheels 2l and 22, preventingr the descent of the car. This lever 37 has an insulated extension 42, which when moved upward connects the segments 43 and 44, but when moved downward connects the segments 45 and 46, this being for a purpose to be presently described.

The motor 2 has wires 47 and 48 connecting the field 49 and wires 50 and 5l connecting the armature 52. The Wire 50 of the armature leads to the source of power, while the wire 5l of said armature leads to the segmental plates 43 and 45. The variable resistances 53 and 54 are provided, and the wire 47`of the field 49 connects with the resistance 53 and the plate 44, while the wire 48 connects with the resistance 54 and plate 46. The wire 5l of the armature leads through the solenoid 27. Thus whenever thev motor 2 is running the solenoid 27 will be energized.

It will be seen that by raising the lever 37 the circuit will be from the source of power 38 through wire 50, armature 52, wire 51, solenoid 27, plate 43, extension 42,-plate 44, wire 47, field 49, wire 48, resistance 53, lever 37, and back to the source of power 38. Should the lever be lowered instead of raised,

the liow of current in the elds would be reversed, thus reversing the motor, this being accomplished by causing the current to pass from the source of power through the wire 50, armature 52, Wire 5l, solenoid 27, plate 45, extension 42, plate 46, wire 48, eld 49, wire 47, resistance 54, lever 36, back to the source of power 38.

While I have described a circuit by which the motor could be reversed, the car could be allowed to descend by gravity (although it is desirable to reverse the motor) if counterweights were used.

While I have herein shown and described my invention in detail, it will be obvious that various slight changes may be made in the details of construction, arrangement of parts, and operating means without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an elevator mechanism, the combination with the elevator-car, of intermeshing gears, shafts upon which said gears are secured, stationary racks with which said gears mesh, beveled gears mounted on said shafts,

beveled gears meshing with said beveled gears, means for rotating the last-mentioned beveled gears in either direction, band-wheels attached to the said shafts, a shoe adapted to contact with said band-wheels, and means for operating the said shoe, substantially as described.

2. In an elevator-operating mechanism, the combination with the elevator-car, of intermeshing gears located at each side of the car, shafts upon which the said gears are mounted, stationary racks with which said gears mesh, a motor mounted adjacent to the said shafts, geared connections between said motor and shafts, band-wheels secured on said shafts, a shoe adapted to contact with said bandwheels, and means for actuating the shoe, substantially as described.

3. In a device of the character described, the combination with the elevator-car, of gears located on each side thereof, shafts on which said gears are secured, stationary racks with which said gears mesh, a motor secured to the car adjacent to said shafts, geared connections between said motorand shafts, bandwheels secured on said shafts, a shoe adapted to contact with said band-wheels, solenoids for actuating said shoe, shoes adapted to contact with the first-mentioned gears,and means for actuating said shoes, substantially as described.

4. In a device of the character described, the combination with the car, of intel-meshinggears mounted on each side thereof, shafts on which said gears are mounted, stationary racks with which said gears mesh, a motor located adjacent to said shafts, geared connections between said motor and shafts, bandwhcels secured to said shafts, a shoe adapted to contact with said band-wheels, solenoids for actuating said shoe, means for controlling the motor and solenoids whereby the shoe will contact with the band-wheels when the motor is not running, auxiliary shoes adapted to contact with the first-mentioned gears and means for actuating the auxiliary shoes, substantially as described.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

GAETANO VISCO.

' In presence of- GEO. B. RowLEY, p H. J. LEVIS.

IIO 

